diff --git a/include/xen/interface/io/blkif.h b/include/xen/interface/io/blkif.h
index 32ec05a6572f779cb735b7a9b3ca5567cd1aed8f..c33e1c489eb2af5b05e1fa00a5daf33caed99c26 100644
--- a/include/xen/interface/io/blkif.h
+++ b/include/xen/interface/io/blkif.h
@@ -86,7 +86,7 @@ typedef uint64_t blkif_sector_t;
  *     Interface%20manuals/100293068c.pdf
  * The backend can optionally provide three extra XenBus attributes to
  * further optimize the discard functionality:
- * 'discard-aligment' - Devices that support discard functionality may
+ * 'discard-alignment' - Devices that support discard functionality may
  * internally allocate space in units that are bigger than the exported
  * logical block size. The discard-alignment parameter indicates how many bytes
  * the beginning of the partition is offset from the internal allocation unit's